Machinery for



N4 PET ERS. PHoTo-LITHOGRAFHER, WASHINGTON. Dv CA UNITED STATES PATENTQFEICE.

EDVV. L. GAYLORD, OF NEWARK, NEIN JERSEY.

MACHINERY FOR BENDING CARPET-BAG- FRAMES, &C.

Specification of Letters Patent No. 9,445, dated December '7, 1852.

To @ZZ whom t may concern:

Be it known that I, EDWARD L. GAYLORD, of Newark, in the county of Essexand State of New Jersey, have invented certain new and usefulImprovements in Machinery for Forming Carpet-Bag Frames; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming partof this specification, in which- Figure l, is a plan or top view of amachine for forming carpet bag frames, constructed according to myimprovements. Fig. 2, is a longitudinal vertical section of the same.Fig. 3, is a transverse vertical section of the same taken in the lineof Fig. 2, looking in the direction of the arrow shown on the saidfigure; Fig. 4, is an elevation of one of the clamps detached from themachine showing the inner side, and Fig. 5, is a front end view of thesame.

Similar letters of reference indicate corresponding parts in each of theseveral figures.

This machine is designed principally for the bending of carpet bagframes, which require their outer edges to correspond eX- actly in form.In the machines now in use for the same purpose, the inner edges arebent to corresponding form, and as the bars from which they are formedare most frequently not of uniform width throughout, the outer edgesafter bending do not correspond with each other, and require to behammered or otherwise manipulated to make them do so.

The object of this machine is to bend the outer edges to an exactlycorresponding form and throw all irregularity or unevenness to the inneredges.

To enable others skilled in the art to make and use my invention I willproceed to describe its construction and operation.

A, is a stationary table or bench having a perfectly plane or straightupper surface, it is supported upon standards B, B, and is nearly of theintended length of the straight parts of the finished bars.

C, C, are a pair of unconnected jaws or clamps for holding the bars tobe bent consisting of flat metal bars of about the same length as thetable A, and placed edgewise above the same; they are recessed all alongthe lower part of their inner faces, as shown at a, a, in Fig. 3, to adepth somewhat less than the thickness of the bars to be bent,

and to a height less than the width of the same; each has a lug D,attached which passes freely through an opening provided for it in thetable. In the lugs D, I), under the table, there are bearings in which ashaft E, rests, the said shaft carrying an eccentric or cam F, which isalways caused by a spring G, secured under the table and pressing upwardunder the lugs, to rest against the under side of the table. The springGr, keeps the clamps raised from the table, unless they are depressed byturning the eccentric F, which has a lever H, attached to its shaft toturn it when necessary. The clamp C, is not required to move laterally,and is held by a spring b, against two stops c, c, which stand up abovethe table. The clamp C, requires a lateral movement, which is given inthe direction toward C, to grip the work, by the downward motion of awedge I,Vwhich works in a suitable guide and operates upon the end of aslide bar J, bearing against the outer side of C', and workingtransversely to the latter in a guide K, on the table. The wedge iscaused to act upon the clamp at suitable times by pressure upon atreadle L, conected to it by a rod M, but is thrown up when not requiredto be in operation, by a spring d, at tached to the treadle. The clampC, when the wedge is not in operation is always thrown away from C, by aspring 7J, which keeps it always in contact with the innerend of the barJ, and keeps the outer end of the latter always in contact with thewedge. The back end of both clamps are kept from getting out of placevertically or laterally by guards c, c, (best shown in Fig. 8). Thefront ends of the clamps are furnished with movable pieces N, N, whichare dovetailed to them so as to slide longitudinally; and between thebacks of the movable pieces and the main parts of the clamps are placedwedges f, f, of an angle of 450, which are also dovetailed to keep themin place. The movable pieces are held back by springs g, g, attached tothem, and to the other parts of the clamps, when not pressed forward bythe wedges f, f, their inner faces are recessed to form a continuationof the recesses c, a, in the parts C, G, of the clamps, part of the topand back l, 2, (see Fig. i) of the said recesses, being in the form ofthe bend of the inner edge of the bent bars when the latter are ofproper width, and being moreover an arc of a circle. rIhe front ends ofthe movable pieces are formed in arcs described from the same centers asl, 2, and to which the lower edges of C, C, form tangente.

To the front end of the table A, is hinged the bending plate O, whichwhen in the position shown in black in the drawings forms a continuationof the table, and is kept Lfrom descending by any suitable means. Theturning point or pivot .71, of the hinge is in the line of the center ofthe are in which the bend is to be made. To the upper face of thebending plate, is secured a fixed clamp P, whose face is in line withthe recessed part of C; and a movable clamp P, is pivoted to 0, the saidmovable clamp being thrown away from P, the fixed clamp, by a spring z',when not drawn toward it by the `wedge Q, whose operation issubstantially similar to that of I, it being provided with a suitablerest j, and being attached to a lever R, whose fulcrum is at le, underthe bending plate.

The operation of bending the bars into proper form, is conducted in thefollowing manner. The two bars to be bent being previously heated at thepart to be bent are placed edgewise on the table A, between the clampsC, C, with the part to be bent, on the bending plate O. (See S Fig. 2,which represents one of the bars.) rlhe operator then by pressing hisfoot upon the treadle closes the clamps and by pushing froward the leverH, with one hand, causes them to be brought down with the upper' sidesof t-he recesses a, a, upon the upper edges of the bars, and by theapplication of suitable force straightens the bars edgewise andflatwise, and holds them firmly together and with their lower edgesparallel-the independent downward motion of the two clamps allowing themto adjust themselves should there be any difference in the width of thetwo bars. The bases of the wedges f, f, are brought by the downwardpressure of the clamps, to bear upon the table and force the movablepieces N, N, out to a proper position, which will vary with the width ofthe bars. The wedges are so adjusted that the distance between the edgeor side l, 2, of the recess in the movable pieces and the face of thebending plate will always be the same as that between the upper side ofa, a, and the table, and as the angle of the wedges is 4150, as thelatter distance varies they cause the former to vary correspondingly. Ifthe two bars S, are of uniform width the edges or sides l, 2, of therecesses in the movable pieces will be even with each other or in a lineparallel with the center line of the hinge, but if the width of the barsdiffers the positions of the movable pieces differ also. The operatorstill keeping the pressure of his foot en the treadle, and his powerapplied to the lever H, with his disengaged hand raises the back end ofthe lever R, which first draws down the wedge Q, and tightens the clampsP, P', and then raises the bending plate which moves in an arc and bendsthe two bars to that form, and as its face is parallel transversely tothat of the table, the outer edges of the two bars must be exactlyparallel both in the straight and bent parts. 1When one end of the barsis thus bent, the bending plate is thrown back, and the treadle andlever H, released and the bars taken from between the clamps. I

The opposite ends are then heated and the bars again placed in theclamps, with the ends already bent, even with each other: and thebending operation is repeated as before.

I do not confine myself to the use of any particular mechanism forclosing the clamps, and gripping the bars C, C, nor for drawing themdown upon the edges of the bars. But

Vhat I claim as my invention and desire to secure by Letters Patent, is-

The employment for the purpose of bending and forming carpet bag framesor for bending two or more flat metal bars edgewise for any purpose, ofa pair of clamps C, C, each moving independently of the other in thedirection of the width of the bars, and having recesses a, a, and selfadjusting movable pieces N, N as described, combined in any waysubstantially as set forth with a table A, and bending plate O.

E. L. GAYLORD.

Witnesses:

O. D. MUNN, Trios. MAHON.

